Is it possible to get translated artifacts via REST APIs?

I have been asked to develop a Test Plan summary document in PDF format. The document must be in Italian.
I know that, setting the locale language in a browser, and having installed the language on the jazz server, then I can see the artifacts in locale language.
Does this mean that the browser sets some kind of header to request content in the chosen language?

I downloaded the testplan.dta from the jazz site, and i am trying to translate it,using RPE Studio. I can successfully translate the template test fields, at but i can't get the artifact descriptions and titles translated when i get them via REST.
When i set the URI content in the relevant Data Source in RPE Launcher, I specify something like:

https://server_address:port/qm/service/com.ibm.rqm.integration.service.IIntegrationService/resources/ProjAreaName/testplan/urn:com.ibm.rqm:testplan:XX

I also added Italian to the testplan.dta following the RPE Help.

Apparently, RPE does not use the same headers browsers use, bacause still I get TestPlan Section Titles and all other descriptions in English.

Is there any way to get the artifacts in another language via REST?

Thanks for any hint